Chair arm



FIG. 1 is an enlarged perspective view showing a chair arm which forms our new design, the broken lines of a chair being for illustrative purposes only and forming no part of our design;

FIG. 2 is an enlarged left side elevational view thereof;

FIG. 3 is an enlarged bottom plan view thereof;

FIG. 4 is an enlarged right side elevational view thereof;

FIG. 5 is an enlarged top plan view thereof;

FIG. 6 is an enlarged front elevational view;

FIG. 7 is an enlarged rear elevational view thereof; and,

FIG. 8 is an enlarged perspective view showing the top, left side and front thereof.

The short broken lines shown on the chair arm in FIGS. 1, 2 and 4-8 are understood to represent stitching. 

The ornamental design for a chair arm, as shown and described. 